20100112102220 has 12 divisors (see below), whose sum is σ = 42210235414704. Its totient is φ = 8040044840880.

The previous prime is 20100112102193. The next prime is 20100112102229. The reversal of 20100112102220 is 2220121100102.

It is a junction number, because it is equal to n+sod(n) for n = 20100112102195 and 20100112102204.

It is not an unprimeable number, because it can be changed into a prime (20100112102229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502502802536 + ... + 502502802575.

It is an arithmetic number, because the mean of its divisors is an integer number (3517519617892).

Almost surely, 2^{20100112102220} is an apocalyptic number.

20100112102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100112102220 is an abundant number, since it is smaller than the sum of its proper divisors (22110123312484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20100112102220 is a wasteful number, since it uses less digits than its factorization.

20100112102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005005605120 (or 1005005605118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20100112102220 its reverse (2220121100102), we get a palindrome (22320233202322).

The spelling of 20100112102220 in words is "twenty trillion, one hundred billion, one hundred twelve million, one hundred two thousand, two hundred twenty".